feat: deploy E2E coverage HTML report to GitHub Pages

Generate a browsable HTML coverage report using genhtml after merging
shard LCOVs. On main, deploy it to GitHub Pages so the team can
inspect per-file coverage without downloading artifacts.

The HTML report is also uploaded as an artifact (e2e-coverage-html)
for PR runs where Pages deployment is skipped.

Requires GitHub Pages to be enabled in repo settings with source set
to GitHub Actions.

.github/workflows/ci-tests-e2e-coverage.yaml

@@ -12,6 +12,8 @@ concurrency:
 
 permissions:
   contents: read
+  pages: write
+  id-token: write
 
 jobs:
   merge:
@@ -71,3 +73,41 @@ jobs:
           flags: e2e
           token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: false
+
+      - name: Generate HTML coverage report
+        run: |
+          genhtml coverage/playwright/coverage.lcov \
+            -o coverage/html \
+            --title "ComfyUI E2E Coverage" \
+            --no-function-coverage \
+            --precision 1
+
+      - name: Upload HTML report artifact
+        uses: actions/upload-artifact@v6
+        with:
+          name: e2e-coverage-html
+          path: coverage/html/
+          retention-days: 30
+
+  deploy:
+    needs: merge
+    if: github.event.workflow_run.head_branch == 'main'
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Download HTML report
+        uses: actions/download-artifact@v7
+        with:
+          name: e2e-coverage-html
+          path: coverage/html
+
+      - name: Upload to GitHub Pages
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: coverage/html
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4